An object with a mass of #2 kg# is hanging from an axle with a radius of #3 m#. If the wheel attached to the axle has a radius of #4 m#, how much force is needed to raise the object?

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Answer 1 · 2017-05-16T05:06:54

The force is #=14.7N#

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The load L=(2g)N#

Radius of axle #r=3m#

Radius of wheel #R=4m#

Taking moments about the center of the axle

#F*R=L*r#

#F*4=2*g*3#

#F=(6*g)/4=14.7N#